Programme

P.5 -- Poster, NCTP-43

Date: Tuesday, 31 July 2018

Time: 08:30 - 10:00

The empirical formula for describing the ionization rate of the atomic system in the deep over-the-barrier regime

Vinh N.T. Pham (1), Phuc Nguyen (2)

(1) Ho Chi Minh University of Education (2) Ho Chi Minh University of Science

Recently, an empirical formula used for describing the ionization rate of the atom in the over-the-barrier regime induced by static electric field has been proposed [Q. Zhang et al., Phys. Rev. A 90, 043410(2014)] and is valid only to $4.5F_b$ where $F_b$ is the barrier-suppression strength. Meanwhile, the available laser intensity has far exceeded this limit. Therefore, this study proposes a new empirical formula describing the ionization rate of several atomic systems up to $10F_b$. Moreover, by providing the accurate numerical calculation of ionization rate and compare to the one proposed by Zhang et al., we figure out that their provided associating parameters in their are inappropriate and give the correction of these vital parameters based on their proposed formula.

Presenter: Pham Nguyen Thanh Vinh